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Home › Gemstones › Natural Untreated Gemstones

Natural Untreated Gemstones

Discover genuine untreated gemstones selected for natural beauty, rarity, and authenticity.

Natural Untreated Gemstones Weight
Natural Untreated Gemstones Size
Natural Untreated Gemstones Clarity
Natural Untreated Gemstones Price
Natural Untreated Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color Natural Untreated Gemstones
Black Natural Untreated Gemstones
Blue Natural Untreated Gemstones
Brown Natural Untreated Gemstones
Golden Natural Untreated Gemstones
Gray Natural Untreated Gemstones
Green Natural Untreated Gemstones
Multicolor Natural Untreated Gemstones
Orange Natural Untreated Gemstones
Pink Natural Untreated Gemstones
Purple Natural Untreated Gemstones
Red Natural Untreated Gemstones
Turquoise Natural Untreated Gemstones
Violet Natural Untreated Gemstones
White Natural Untreated Gemstones
Yellow Natural Untreated Gemstones
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3.81ct Yellow Citrine, Oval, VVS-VS

3.81ct Yellow Citrine, Oval, VVS-VS

12 x 10 mm (calibrated)

$ 30.36

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6.96ct Pink Morganite, Round, Translucent

6.96ct Pink Morganite, Round, Translucent

12 mm (calibrated)

$ 76.25

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3.12ct Yellow Rutile Quartz, Oval, Transparent

3.12ct Yellow Rutile Quartz, Oval, Transparent

12 x 8 mm (calibrated)

$ 8.55

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35.49ct Black Obsidian, Pear Shape, Opaque

35.49ct Black Obsidian, Pear Shape, Opaque

33.4 x 22.5 mm

$ 38.89

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56.10ct Yellow Rutile Quartz, Oval, Translucent

56.10ct Yellow Rutile Quartz, Oval, Translucent

34.8 x 17.3 mm

$ 61.46

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22.99ct Violet Amethyst, Round, VVS
Amethyst Product Video (692704)

22.99ct Violet Amethyst, Round, VVS

20 mm (calibrated)

$ 160.29

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6.38ctw Yellow Citrine, Oval, VVS-VS

6.38ctw Yellow Citrine, Oval, VVS-VS

11 x 9 mm (calibrated)

$ 44.48

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6.02ct Brown Tiger'S Eye, Baguette, Opaque

6.02ct Brown Tiger'S Eye, Baguette, Opaque

12 x 10 mm (calibrated)

$ 3.30

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0.64ct White Rainbow Moonstone, Pear Shape, Transparent

0.64ct White Rainbow Moonstone, Pear Shape, Transparent

7 x 5 mm (calibrated)

$ 11.47

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4.01ct Yellow Citrine, Oval, VVS-VS

4.01ct Yellow Citrine, Oval, VVS-VS

14 x 10 mm (calibrated)

$ 24.07

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1.22ct White Sillimanite Cat'S Eye, Oval, Transparent

1.22ct White Sillimanite Cat'S Eye, Oval, Transparent

6.7 x 5.4 mm

$ 3.64

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28.65ct Multicolor Jasper, Oval, Opaque

28.65ct Multicolor Jasper, Oval, Opaque

28.6 x 21.8 mm

$ 37.99

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4.24ctw White Topaz, Cushion, VVS-VS

4.24ctw White Topaz, Cushion, VVS-VS

4.6 x 4.5 mm

$ 23.22

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0.55ct Pink Spinel, Cushion, VVS

0.55ct Pink Spinel, Cushion, VVS

4.9 x 4.5 mm

$ 38.35

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2.85ct Yellow Citrine, Oval, VS

2.85ct Yellow Citrine, Oval, VS

11 x 9 mm (calibrated)

$ 19.87

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24.82ct Blue Chalcedony, Cushion, Opaque

24.82ct Blue Chalcedony, Cushion, Opaque

22.7 x 21.5 mm

$ 61.80

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3.41ctw Yellow Golden Beryl, Oval, VVS-VS

3.41ctw Yellow Golden Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 74.72

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10.10ct Multicolor Agate, Round, Opaque

10.10ct Multicolor Agate, Round, Opaque

12 mm (calibrated)

$ 9.56

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1.56ct Orange Hessonite Garnet, Oval, VS-SI

1.56ct Orange Hessonite Garnet, Oval, VS-SI

7.5 x 6.3 mm

$ 73.50

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0.55ct Orange Clinohumite, Round, SI

0.55ct Orange Clinohumite, Round, SI

5.3 mm

$ 27.39

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0.79ct Green Tourmaline, Baguette, VS

0.79ct Green Tourmaline, Baguette, VS

7.9 x 3.6 mm

$ 27.54

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1.07ct Yellow Citrine, Cushion, VVS

1.07ct Yellow Citrine, Cushion, VVS

8 x 6 mm (calibrated)

$ 7.99

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1.14ct Orange Hessonite Garnet, Baguette, VS

1.14ct Orange Hessonite Garnet, Baguette, VS

6.2 x 4.3 mm

$ 21.53

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77.33ct White Quartz, Round, VS
Quartz Product Video (757553)

77.33ct White Quartz, Round, VS

26.3 mm

$ 132.23

View Gem
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Why Buy Natural Untreated Gemstones from GemSelect?

Why Choose Untreated Gemstones?

Untreated gemstones are valued for their natural color and clarity without artificial enhancement. Many buyers prefer these gems for authenticity, rarity, and long-term value.

Natural Loose Untreated Gems Online

Shop loose untreated gemstones online at GemSelect with confidence. Browse sapphires, rubies, spinels, aquamarine, garnet, tourmaline, and more with full disclosure.

Natural Untreated Gemstones for Jewelry and Collecting

Untreated Gemstones for Jewelry

Natural untreated gems are excellent for rings, earrings, pendants, and custom jewelry. Their original beauty makes every piece unique and meaningful.

Popular Untreated Gemstone Types

Popular choices include untreated sapphire, ruby, spinel, garnet, tourmaline, zircon, aquamarine, and many collector stones in a wide range of colors.

Certified Natural Gemstones

Many buyers choose untreated gemstones with gemological reports for added confidence. Certification can confirm identity and indicate whether treatments are present.

Collector Quality Untreated Gems

Collectors appreciate untreated gemstones because naturally fine examples are rarer than treated material. These stones can be especially desirable when color and clarity are strong.

Calibrated Untreated Gemstones

We also offer calibrated untreated gemstones in popular sizes suitable for standard jewelry settings, making custom designs easier and faster.

Worldwide Shipping from GemSelect

GemSelect offers secure online ordering, detailed product images, and worldwide delivery so you can shop untreated gemstones from anywhere.

Learn more about gemstone treatments, identification, and care on our Gemstone Information Pages.

FAQs

What does untreated gemstone mean?

An untreated gemstone has not undergone enhancement processes such as heating, dyeing, filling, coating, or diffusion to improve appearance.

Are untreated gemstones more valuable?

Often yes, especially in sapphire, ruby, and other premium gems where fine untreated stones are rarer than treated examples.

How can I verify a gemstone is untreated?

Independent laboratory certification is the best way to verify whether a gemstone is natural and untreated.

Which gemstones are commonly sold untreated?

Spinel, garnet, zircon, tourmaline, aquamarine, and some sapphires or rubies are often available untreated depending on source and quality.

Are all untreated gemstones natural?

Natural untreated gemstones are mined stones that have not been enhanced after cutting. Always buy from trusted sellers with clear disclosure.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This was my first experience with this company. I had no difficulty finding the item I wanted, and checking out was a breeze! Ia'm hoping my item arrives quickly, intact, and of good quality. Overall, this was a very satisfactory experience.

Posted By Gem connoisseur in August, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I loved the selection of gemstones you have a to z

Posted By James in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
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